Dutch elm disease remains one of the most significant threats to elm populations in Northern Europe. Since its arrival, the disease has caused widespread mortality, altering urban landscapes, rural environments, and some of the continent’s most valuable elm habitats.

This webinar will provide a scientific overview of Dutch elm disease in Sweden and neighboring countries, drawing on insights from research, long-term monitoring, and conservation initiatives. Participants will learn about the biology of the disease, the interactions between the pathogen, bark beetle vectors, and elm hosts, and the factors that influence disease transmission and severity.

Particular attention will be given to the pathogens responsible for Dutch elm disease, including the various Ophiostoma species involved and their epidemiology. The webinar will explore how pathogen biology, vector ecology, and host responses interact to influence the spread and severity of the disease. The role of climate change in shaping future disease dynamics, vector populations, and elm survival will also be discussed.

Recent developments in elm vaccination will be presented, including experiences from the Swedish initiative Almuppropet, which has played an important role in raising awareness of Dutch elm disease and promoting the protection of valuable elm trees. The webinar will discuss the scientific principles behind vaccination, current knowledge of its effectiveness, and its potential role in long-term elm conservation.

Drawing on examples from Sweden and neighboring countries, the webinar will provide participants with a deeper understanding of one of Europe’s most significant tree diseases and the challenges and opportunities facing elm conservation in a changing climate.

The session will conclude with a question-and-answer session and discussion.

The course is intended for:

This webinar is intended for arborists, urban forestry professionals, municipal staff, researchers, students, environmental consultants, conservation practitioners, and others interested in the science, management, and conservation of elm populations affected by Dutch elm disease.

The aim/purpose of the course is:

To provide participants with up-to-date scientific knowledge about Dutch elm disease, including pathogen biology, disease transmission, vector ecology, the impacts of climate change, and recent developments in elm vaccination, thereby supporting informed decision-making for the conservation of elm populations in Northern Europe.